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Linux tutorials
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Solving the ugly key problem |
| Post date: May 24, 2005, 13:05 Category: Hardware Views: 1410 Comments: 0 |
Tutorial quote: You have one of the finest operating systems running on you computer and you are pleased with the setup of your desktop. Proud and happy as you are you look at your computer. You look down to the keyboard and what are those ugly keys in the lower row of your keyboard? Win-keys??!
Even though you might not be using those keys it is still annoying and stressful to see them. How can we replace them by penguin keys?
This short tip presents two solutions for this problem. |
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Linux tools for study and analysis of biological information |
| Post date: May 24, 2005, 13:05 Category: Software Views: 688 Comments: 0 |
Tutorial quote: This article wants to show some of the advantages of Perl programming on Unix, for extraction of the biological information of the DNA, RNA and proteine sequences Databases. They can be used in comparative processes or analysis. The Human Genome project and the DNA clonation techniques have accelerated the scientific progress in this area. Daily generated information in this field outgrows often the capability of processing this information from an evolutive viewpoint.
The fast proliferation of the biological information on different genomes (dowry of genes of an organism) is driving bioinformatics as one fundamental discipline for the handling and analysis of these data. |
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LCD displays easy to use and easy to build |
| Post date: May 24, 2005, 13:05 Category: Hardware Views: 1300 Comments: 0 |
Tutorial quote: This article presents now the "basic" model: LCD display and 2 buttons; simple and easy to build for everybody.
Lcdproc used to be at the very beginning a program to display some statistics (cpu load, uptime, time, ...) on an external LCD display. Over time it has however evolved into a much more generic solution. Today the lcdproc package contains LCDd, a generic server and LCD driver, plus many clients. One of those clients is still the actual executable called lcdproc which still shows server statistics however there are also others. This client server architecture has the big advantage that you do not need to write your client in a specific language. You just need to use the simple ascii protocol between client and server. |
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NFS over CIPE-VPN tunnels |
| Post date: May 23, 2005, 11:05 Category: Network Views: 982 Comments: 0 |
| Tutorial quote: The Network File System (NFS) is a standard protocol for sharing file services with Linux and Unix computers. It is a distributed file system that enables local access to remote disks and file systems and is based on the client\server architecture. Although easy to configure, it is typically used only to transfer data over an intranet or LAN because of its transparency and security potholes when exposed to the risks of the Internet. However, it still can be employed -- without compromising security -- to share files over the Internet by configuring it to run on a Virtual Private Network (VPN) connection. This article will show you how to set up NFS to run over a CIPE-VPN connection between two Linux systems. |
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Application optimization with compilers for Linux on POWER |
| Post date: May 23, 2005, 11:05 Category: Optimizing Views: 862 Comments: 0 |
| Tutorial quote: The Linux on POWER platform offers more than one option to produce binary C/C++ code. In addition to supporting both 32- and 64-bit runtime environments simultaneously, Linux on POWER has two compiler collections. The GNU Compiler Collection, or GCC, is consistent with other Linux implementations with specific exceptions for the POWER architecture. GCC is the leading compiler for portability but also features a number of performance enhancements for optimizing code. The IBM XL C/C++ compiler for Linux on POWER is derived from the high performance compiler for AIX but uses the GNU linker and assembler to create ELF objects that are fully compatible with objects produced by GCC. This document provides side-by-side comparisons of how these two compilers are controlled, overviews of what the compilers are capable of, in terms of optimization, and tips for writing code that is more easily optimized with either of these compilers. |
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The PartImage Handbook |
| Post date: May 21, 2005, 10:05 Category: Software Views: 821 Comments: 0 |
Tutorial quote: - Partition Image is a Linux/UNIX partition imaging utility: it saves partitions formatted using the Ext2FS (the linux standard), ReiserFS (a new journaled and powerful file system), JFS IBM journaled file systems from AIX, NTFS (Windows NT File System), FAT16/32 (DOS & Windows file systems), or HPFS (OS/2 file system) file system formats to an image file. Only used blocks are copied. The image file can be compressed in the GZIP/BZIP2 formats to save disk space, and split into multiple files to be copied on removable media (ZIP for example), or burned on a CD-R ...
- This allows the user to save a full Linux/Windows system, with a single operation. When problems occur (viruses, crash, error, ...), you just have to restore, and after several minutes, all your system is restored (boot, files, ...), and fully working.
- This is very useful when installing the same software on many machines: just install one of them, create an image, and then restore the image on all other machines. After the first one, each subsequent installation can be made automaticaly, and only requires a few minutes. |
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Optimizing Desktop Performance, Part I |
| Post date: May 16, 2005, 18:05 Category: Optimizing Views: 1329 Comments: 0 |
| Tutorial quote: If you have complained about the speed of OpenOffice.org or Firefox or about the amount of time Linux takes to boot up, this set of optimizations should change your perception. Linux can boot up quickly, the word processor can spring open and the browser can fly. So, let's make these adjustments so your computer can fly. |
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DOSBox - A DOS Emulator |
| Post date: May 1, 2005, 12:05 Category: Emulation Views: 1439 Comments: 0 |
Tutorial quote: Do you rely on legacy DOS apps. that are critical to the survival of your business? Me neither - I just want to play Frogger again...
One way of running those old favourites under Linux is to use the DOSBox software package. |
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Compiling Your Own Kernel |
| Post date: May 1, 2005, 12:05 Category: System Views: 773 Comments: 0 |
Tutorial quote: Once I decided to take the plunge and go for it, I realised it's not too hard at all. As long as you have a bootable floppy or CD to boot from if your new kernel doesn't work, you'll be OK.
For this simple guide, I'll assume that you use LILO as your boot manager. |
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DOS Emulation Under Linux |
| Post date: May 1, 2005, 12:05 Category: Emulation Views: 1154 Comments: 0 |
Tutorial quote: Whether you need to run some legacy corporate application, or just want to play some of those old classic DOS games, it's easy to get going.
I've done this on a Slackware 9.1 Linux system with a 2.4.22 kernel, running KDE 3.1.4. The process should be very similar for most reasonably recent Linux distros. |
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